Wireless telegraphy.



PATENTED OCT. 3, 1905.

I. KITSEE. WIRELESS TELEGRAPHY.

APPLICATION FILED FEB. 8,1902.

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ISIDOR KITSEE, OF PHILADELPHIA, PENNSYLVANIA.

WIRELESS TELEGRAPHY.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed February 8, 1902. Serial No. 93,244.

To all whom it may concern:

Be it known that I, ISIDOR KITsEE, of the city and county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in l/Vireless Telegraphy, of which the following is a specification.

My invention relates to an improvement in transmitting electrical impulses without a continuous metallic circuit, and apparatus for same.

The objects of my invention are to provide for such communications an improved sending device, to provide for such communications an improved receiving device.

Referring to the drawings, Figure 1 is a diagrammatic view of the sending-station. Fig. 2 is a diagrammatic view of the receiving-station, both embodying my invention.

In Fig. 1, C is the source of electric energy; D, D the primaries of two inductoriums connected in series as to each other and through wires 1, 2, and 3, with the interposition of the interrupter, to the source C. If this source consists, as illustrated in the drawings, of a battery or generator of direct current, the interrupter is a necessity, but if this source consists of a generator of alternating current, the interrupter can be omitted and the wires 1, 2, and 3 connected directly to each other. (Z, and d are the secondaries of the two in- (luctoriums. These secondaries are 'con nected in opposition as to each other and are in electrical contact with the aerial conductor 12, and the ground-conductor 11. Normally, that is, when the battery and interrupter are in the circuit, the current impulses flowing through the primaries D and D will induce impulses in d and d, but as these coils are connected to each other in opposition, the induced impulses will neutralize each other, and therefore no impulses will flow through wires 11 or 12. To use this device for the purpose of transmitting induced impulses, it is necessary to shunt one or the other of the primaries or secondaries, and in my experiments I found that it is far more. advantageous to transmit such impulses with the aid of a shunt around one of the primary coils and to place in this shunt the sending-key. This shunt is indicated in the drawings by wires 4 and 5 and the sending-key E, with its lower stop 6, is connected to the wire 4. As long as the key E remains open, the induced impulses in the secondary will, as said above, oppose each other and therefore no impulses will be transmitted through the aerial conductor or through the ground, but as soon as the key E is closed, the coil D is shunted and the impulses flowing through coil D will induce impulses in (1. These impulses will be augmented by the impulses generated in cl through the ceasing of the current-flow in D. This arrangement greatly facilitates the sending of messages and the speed of sending the same, for the reason, that the eXtraimpulses generated in the seconardies by the opening of the key are in this system neutralized.

In Fig. 2the receivingstation-J is the receiving device consisting of the receptacle j, and the movable conductor 1' this moveable conductor is preferably in the shape of a vibrating tongue, pivoted at one end by the pivoting device In proximity to the other end are placed the adjustable contacts j and The receptacle contains water in a state pure enough to make it a non-conductor for a straight voltaic current, and to make it a conductor for a high-potential. current such as is transmitted in wireless telegraphy. If the switch 43, connected to the aerial conductor 13, connects with the wire 14 in electrical contact with the vibrating tongue 7' and impulses of the necessary high tension are received by the aerial conductor, then these impulses will have the following paths to the ground: either through wire 15, impedance n, electromagnet H and wire 15 to the ground G, or, through impedance n wire 24, electromagnet H battery C wire 21 to G there is a third path open for the received impulses and this path leads from wire 14 through conducting-tongue j liquid 7', contact 7' or wire 20 or 21, shunt 19 18 or 27 28 to G. The impedance n and n are of high retarding value and as the liquid 9" does not offer any resistance or impedance to the flow of the high-potential current, the received impulses will select the path through the tongue 7' liquid j and one of the contactpoints, but the vibrating tongue, as soon as charged with the received impulses, will at once connect with one or the other of the contact-points, and in practice one of the contact-points should be nearer to or in better contact with the conducting-tongue than the other. In the illustration, contact-point 3' is in better contact with the vibrating end of the tongue than 1. As soon therefore as the tongue end has received the impulses, it

will connect with contact-point through this connection. the following circuit is established: source of electric current C wire 21, impedance at" and its shunt, contact 3', vibrating tongue 7' impedance 01?, wire 24, and electromagnet H. The electromagnet H" therefore will be energized and will draw the armature from its contact 763 down to contact This action will have a twofold result: First, the shunt around impedance a will be broken, the flow of the impulses through wire 21 will be retarded, and as the shunt around the impedance a" is opened the impulses will tend to flow through the wire 20 and the shunt around the impedance n to earth, the tongue therefore willberepelled from contact and will connect with contact j, thus establishing a circuit consisting of source of current C wire 20 wire 15, electromagnet I-I, impedance n, wire 15, vibrating tongue j contact-point j, wire 20,

, impedance n and its shunt, back to the battery. The electromagnet H. will be energized and the armature F will be drawn from the contact 7i toward the contact 75. Through this action, the shunt around the impedance n will be open, and as at the same time the shunt around the impedance a is closed, the tongue end j will again recede from and connect with j" provided that the impulses are still received by the aerial conductor 13. But the magnetization of the coils II" and H result also in the closing of the following circuits: If armature F connects with contact F, then the circuit consisting of k F wire 22, translating device H, source of current C and wire 23 is established. This translating device I-I may consist of a sounder or a recorder or any preferred apparatus capable of being acted upon by the electric current. If on the other hand the armature F connects with the contact It, then the following circuit is established: 7i, 1*, wire 17, source of current C", translating device H, wire 22 and wire 16. It will therefore be seen that the resultant action of the received impulses is an alternately closing of one of the circuits containing the translating device. No matter therefore with which. of the two contacts j" or the conducting-tongue connects, one or the other of the circuits containing the electromagnets II" or II will be closed andv this closing will result in the closing of one or the other of the circuits containing the trans lating device II.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A system of telegraphic communications without continuous line-wire consisting of a sending and receiving station, the sending-station being provided with a source of alternating or interrupted current, an inductorium, one part of which is wound or connected in a manner so that the impulses induced in the secondaries should normally neutralize each other, a sending-key and means operatively connected to said sendingkey to destroy said neutralizing action.

2. In a system of telegraphic communications without continuous line-wire, a receiv ing device consisting of a containing vessel, a liquid non-conductingfor voltaic but con (1 ucting for induced currents contained therein, a conductor contained therein, contactpoints in proximity to said conductor, a local circuit for each of said contact-points and means operatively connected with said conductor to operate through the closing of one or the other of said circuits a translating device the conductor contained in said. liquid connected to an aerial conductor and the contact-points connected through an impedance to the ground.

3. In electric telegraphy without continuous metallic wire, a receiving device embracing a movable conductor immersed in a liquid non-conducting for low voltaic but conducting for high induced currents, an adjustable contact in proximity to said conductor, said adjustable contact connected to the ground, a local circuit connected with one terminal to said adjustable contact and with the other terminal to the movable conductor, an electromagnet in said circuit and means to operate thereby a second local circuit containing translating device, the movable conductor adapted to be connected to the aerial conductor.

In testimony whereof I hereby sign my name, in the presence of tWo subscribing witnesses, this 30th day of July, A. D. 1901.

ISIDOR KITSEE.

I/Vitnesses EDITH R. STILLEY, CnAs. KUSSENBEROH. 

